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DefaultWindowBehaviour.cpp
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DefaultWindowBehaviour.cpp
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/*
* Copyright 2001-2010, Haiku, Inc.
* Distributed under the terms of the MIT license.
*
* Authors:
* DarkWyrm <bpmagic@columbus.rr.com>
* Adi Oanca <adioanca@gmail.com>
* Stephan Aßmus <superstippi@gmx.de>
* Axel Dörfler <axeld@pinc-software.de>
* Brecht Machiels <brecht@mos6581.org>
* Clemens Zeidler <haiku@clemens-zeidler.de>
* Ingo Weinhold <ingo_weinhold@gmx.de>
*/
#include "DefaultWindowBehaviour.h"
#include <math.h>
#include <WindowPrivate.h>
#include "ClickTarget.h"
#include "Desktop.h"
#include "DefaultDecorator.h"
#include "DrawingEngine.h"
#include "Window.h"
//#define DEBUG_WINDOW_CLICK
#ifdef DEBUG_WINDOW_CLICK
# define STRACE_CLICK(x) printf x
#else
# define STRACE_CLICK(x) ;
#endif
// The span between mouse down
static const bigtime_t kWindowActivationTimeout = 500000LL;
// #pragma mark - State
struct DefaultWindowBehaviour::State {
State(DefaultWindowBehaviour& behavior)
:
fBehavior(behavior),
fWindow(behavior.fWindow),
fDesktop(behavior.fDesktop)
{
}
virtual ~State()
{
}
virtual void EnterState(State* previousState)
{
}
virtual void ExitState(State* nextState)
{
}
virtual bool MouseDown(BMessage* message, BPoint where, bool& _unhandled)
{
return true;
}
virtual void MouseUp(BMessage* message, BPoint where)
{
}
virtual void MouseMoved(BMessage* message, BPoint where, bool isFake)
{
}
virtual void ModifiersChanged(BPoint where, int32 modifiers)
{
}
protected:
DefaultWindowBehaviour& fBehavior;
Window* fWindow;
Desktop* fDesktop;
};
// #pragma mark - ManageWindowState Definition
struct DefaultWindowBehaviour::ManageWindowState : State {
ManageWindowState(DefaultWindowBehaviour& behavior,
BPoint where);
ManageWindowState(DefaultWindowBehaviour& behavior,
BPoint where, int8 horizontal, int8 vertical);
virtual void EnterState(State* previousState);
virtual void ExitState(State* nextState);
virtual bool MouseDown(BMessage* message, BPoint where,
bool& _unhandled);
virtual void MouseMoved(BMessage* message, BPoint where, bool isFake);
virtual void ModifiersChanged(BPoint where, int32 modifiers);
private:
void _UpdateResizeArrows(BPoint where);
private:
BPoint fLastMousePosition;
int8 fHorizontal;
int8 fVertical;
};
// #pragma mark - MouseTrackingState
struct DefaultWindowBehaviour::MouseTrackingState : State {
MouseTrackingState(DefaultWindowBehaviour& behavior, BPoint where,
bool windowActionOnMouseUp, bool minimizeCheckOnMouseUp,
int32 mouseButton = B_PRIMARY_MOUSE_BUTTON)
:
State(behavior),
fMouseButton(mouseButton),
fWindowActionOnMouseUp(windowActionOnMouseUp),
fMinimizeCheckOnMouseUp(minimizeCheckOnMouseUp),
fLastMousePosition(where),
fMouseMoveDistance(0),
fLastMoveTime(system_time())
{
}
virtual void MouseUp(BMessage* message, BPoint where)
{
// ignore, if it's not our mouse button
int32 buttons = message->FindInt32("buttons");
if ((buttons & fMouseButton) != 0)
return;
if (fMinimizeCheckOnMouseUp) {
// If the modifiers haven't changed in the meantime and not too
// much time has elapsed, we're supposed to minimize the window.
fMinimizeCheckOnMouseUp = false;
if (message->FindInt32("modifiers") == fBehavior.fLastModifiers
&& (fWindow->Flags() & B_NOT_MINIMIZABLE) == 0
&& system_time() - fLastMoveTime < kWindowActivationTimeout) {
fWindow->ServerWindow()->NotifyMinimize(true);
}
}
// Perform the window action in case the mouse was not moved.
if (fWindowActionOnMouseUp) {
// There is a time window for this feature, i.e. click and press
// too long, nothing will happen.
if (system_time() - fLastMoveTime < kWindowActivationTimeout)
MouseUpWindowAction();
}
fBehavior._NextState(NULL);
}
virtual void MouseMoved(BMessage* message, BPoint where, bool isFake)
{
// Limit the rate at which "mouse moved" events are handled that move
// or resize the window. At the moment this affects also tab sliding,
// but 1/75 s is a pretty fine granularity anyway, so don't bother.
bigtime_t now = system_time();
if (now - fLastMoveTime < 13333) {
// TODO: add a "timed event" to query for
// the then current mouse position
return;
}
if (fWindowActionOnMouseUp || fMinimizeCheckOnMouseUp) {
if (now - fLastMoveTime >= kWindowActivationTimeout) {
// This click is too long already for window activation/
// minimizing.
fWindowActionOnMouseUp = false;
fMinimizeCheckOnMouseUp = false;
fLastMoveTime = now;
}
} else
fLastMoveTime = now;
BPoint delta = where - fLastMousePosition;
// NOTE: "delta" is later used to change fLastMousePosition.
// If for some reason no change should take effect, delta
// is to be set to (0, 0) so that fLastMousePosition is not
// adjusted. This way the relative mouse position to the
// item being changed (border during resizing, tab during
// sliding...) stays fixed when the mouse is moved so that
// changes are taking effect again.
// If the window was moved enough, it doesn't come to
// the front in FFM mode when the mouse is released.
if (fWindowActionOnMouseUp || fMinimizeCheckOnMouseUp) {
fMouseMoveDistance += delta.x * delta.x + delta.y * delta.y;
if (fMouseMoveDistance > 16.0f) {
fWindowActionOnMouseUp = false;
fMinimizeCheckOnMouseUp = false;
} else
delta = B_ORIGIN;
}
// perform the action (this also updates the delta)
MouseMovedAction(delta, now);
// set the new mouse position
fLastMousePosition += delta;
}
virtual void MouseMovedAction(BPoint& delta, bigtime_t now)
{
}
virtual void MouseUpWindowAction()
{
// default is window activation
fDesktop->ActivateWindow(fWindow);
}
protected:
int32 fMouseButton;
bool fWindowActionOnMouseUp : 1;
bool fMinimizeCheckOnMouseUp : 1;
BPoint fLastMousePosition;
float fMouseMoveDistance;
bigtime_t fLastMoveTime;
};
// #pragma mark - DragState
struct DefaultWindowBehaviour::DragState : MouseTrackingState {
DragState(DefaultWindowBehaviour& behavior, BPoint where,
bool activateOnMouseUp, bool minimizeCheckOnMouseUp)
:
MouseTrackingState(behavior, where, activateOnMouseUp,
minimizeCheckOnMouseUp)
{
}
virtual void EnterState(State* previousState)
{
}
virtual void ExitState(State* nextState)
{
}
virtual bool MouseDown(BMessage* message, BPoint where, bool& _unhandled)
{
// right-click while dragging shall bring the window to front
int32 buttons = message->FindInt32("buttons");
if ((buttons & B_SECONDARY_MOUSE_BUTTON) != 0) {
if (fWindow == fDesktop->BackWindow())
fDesktop->ActivateWindow(fWindow);
else
fDesktop->SendWindowBehind(fWindow);
return true;
}
return MouseTrackingState::MouseDown(message, where, _unhandled);
}
virtual void MouseUp(BMessage* message, BPoint where)
{
int32 modifiers = message->FindInt32("modifiers");
if (fBehavior._IsWindowModifier(modifiers)) {
// If the window modifiers are held return to the window
// management state.
fBehavior._NextState(new(std::nothrow) ManageWindowState(
fBehavior, where));
} else {
if ((fWindow->Flags() & B_NOT_RESIZABLE) == 0
&& fBehavior._IsControlModifier(modifiers)) {
fBehavior._SetBorderResizeCursor(where);
} else
fBehavior._ResetCursor();
fBehavior._NextState(NULL);
}
}
virtual void ModifiersChanged(BPoint where, int32 modifiers)
{
// Exit if user lifted window management modifiers
fBehavior.fLastModifiers = modifiers;
if (!fBehavior._IsWindowModifier(modifiers)) {
if ((fWindow->Flags() & B_NOT_RESIZABLE) == 0
&& fBehavior._IsControlModifier(modifiers)) {
fBehavior._SetBorderResizeCursor(where);
} else
fBehavior._ResetCursor();
fBehavior._NextState(NULL);
}
}
virtual void MouseMovedAction(BPoint& delta, bigtime_t now)
{
if (!(fWindow->Flags() & B_NOT_MOVABLE)) {
BPoint oldLeftTop = fWindow->Frame().LeftTop();
fBehavior.AlterDeltaForSnap(fWindow, delta, now);
fDesktop->MoveWindowBy(fWindow, delta.x, delta.y);
// constrain delta to true change in position
delta = fWindow->Frame().LeftTop() - oldLeftTop;
} else
delta = BPoint(0, 0);
}
};
// #pragma mark - ResizeState
struct DefaultWindowBehaviour::ResizeState : MouseTrackingState {
ResizeState(DefaultWindowBehaviour& behavior, BPoint where,
bool activateOnMouseUp)
:
MouseTrackingState(behavior, where, activateOnMouseUp, false)
{
}
virtual void MouseMovedAction(BPoint& delta, bigtime_t now)
{
if (!(fWindow->Flags() & B_NOT_RESIZABLE)) {
if (fWindow->Flags() & B_NOT_V_RESIZABLE)
delta.y = 0;
if (fWindow->Flags() & B_NOT_H_RESIZABLE)
delta.x = 0;
BPoint oldRightBottom = fWindow->Frame().RightBottom();
fDesktop->ResizeWindowBy(fWindow, delta.x, delta.y);
// constrain delta to true change in size
delta = fWindow->Frame().RightBottom() - oldRightBottom;
} else
delta = BPoint(0, 0);
}
};
// #pragma mark - SlideTabState
struct DefaultWindowBehaviour::SlideTabState : MouseTrackingState {
SlideTabState(DefaultWindowBehaviour& behavior, BPoint where)
:
MouseTrackingState(behavior, where, false, false)
{
}
virtual
~SlideTabState()
{
fDesktop->SetWindowTabLocation(fWindow, fWindow->TabLocation(), false);
}
virtual void MouseMovedAction(BPoint& delta, bigtime_t now)
{
float location = fWindow->TabLocation();
// TODO: change to [0:1]
location += delta.x;
AdjustMultiTabLocation(location, true);
if (fDesktop->SetWindowTabLocation(fWindow, location, true))
delta.y = 0;
else
delta = BPoint(0, 0);
}
void AdjustMultiTabLocation(float location, bool isShifting)
{
::Decorator* decorator = fWindow->Decorator();
if (decorator == NULL || decorator->CountTabs() <= 1)
return;
// TODO does not work for none continuous shifts
int32 windowIndex = fWindow->PositionInStack();
DefaultDecorator::Tab* movingTab = static_cast<DefaultDecorator::Tab*>(
decorator->TabAt(windowIndex));
int32 neighbourIndex = windowIndex;
if (movingTab->tabOffset > location)
neighbourIndex--;
else
neighbourIndex++;
DefaultDecorator::Tab* neighbourTab
= static_cast<DefaultDecorator::Tab*>(decorator->TabAt(
neighbourIndex));
if (neighbourTab == NULL)
return;
if (movingTab->tabOffset > location) {
if (location >
neighbourTab->tabOffset + neighbourTab->tabRect.Width() / 2)
return;
} else {
if (location + movingTab->tabRect.Width() <
neighbourTab->tabOffset + neighbourTab->tabRect.Width() / 2)
return;
}
fWindow->MoveToStackPosition(neighbourIndex, isShifting);
}
};
// #pragma mark - ResizeBorderState
struct DefaultWindowBehaviour::ResizeBorderState : MouseTrackingState {
ResizeBorderState(DefaultWindowBehaviour& behavior, BPoint where,
Decorator::Region region)
:
MouseTrackingState(behavior, where, true, false,
B_SECONDARY_MOUSE_BUTTON),
fHorizontal(NONE),
fVertical(NONE)
{
switch (region) {
case Decorator::REGION_TAB:
fHorizontal = NONE;
fVertical = NONE;
break;
case Decorator::REGION_LEFT_BORDER:
fHorizontal = LEFT;
break;
case Decorator::REGION_RIGHT_BORDER:
fHorizontal = RIGHT;
break;
case Decorator::REGION_TOP_BORDER:
fVertical = TOP;
break;
case Decorator::REGION_BOTTOM_BORDER:
fVertical = BOTTOM;
break;
case Decorator::REGION_LEFT_TOP_CORNER:
fHorizontal = LEFT;
fVertical = TOP;
break;
case Decorator::REGION_LEFT_BOTTOM_CORNER:
fHorizontal = LEFT;
fVertical = BOTTOM;
break;
case Decorator::REGION_RIGHT_TOP_CORNER:
fHorizontal = RIGHT;
fVertical = TOP;
break;
case Decorator::REGION_RIGHT_BOTTOM_CORNER:
fHorizontal = RIGHT;
fVertical = BOTTOM;
break;
default:
break;
}
}
ResizeBorderState(DefaultWindowBehaviour& behavior, BPoint where,
int8 horizontal, int8 vertical)
:
MouseTrackingState(behavior, where, true, false,
B_SECONDARY_MOUSE_BUTTON),
fHorizontal(horizontal),
fVertical(vertical)
{
}
virtual void EnterState(State* previousState)
{
fBehavior._SetResizeCursor(fHorizontal, fVertical);
}
virtual void ExitState(State* nextState)
{
}
virtual void MouseUp(BMessage* message, BPoint where)
{
int32 modifiers = message->FindInt32("modifiers");
if (fBehavior._IsWindowModifier(modifiers)) {
// If the window modifiers are still held return to window
// management state.
fBehavior._NextState(new(std::nothrow) ManageWindowState(
fBehavior, where, fHorizontal, fVertical));
} else {
if ((fWindow->Flags() & B_NOT_RESIZABLE) == 0
&& fBehavior._IsControlModifier(modifiers)) {
fBehavior._SetBorderResizeCursor(where);
} else
fBehavior._ResetCursor();
fBehavior._NextState(NULL);
}
}
virtual void ModifiersChanged(BPoint where, int32 modifiers)
{
// Exit if user lifted window management modifiers
fBehavior.fLastModifiers = modifiers;
if (!fBehavior._IsWindowModifier(modifiers)) {
if ((fWindow->Flags() & B_NOT_RESIZABLE) == 0
&& fBehavior._IsControlModifier(modifiers)) {
fBehavior._SetBorderResizeCursor(where);
} else
fBehavior._ResetCursor();
fBehavior._NextState(NULL);
}
}
virtual void MouseMovedAction(BPoint& delta, bigtime_t now)
{
if (fHorizontal == NONE)
delta.x = 0;
if (fVertical == NONE)
delta.y = 0;
if (delta.x == 0 && delta.y == 0)
return;
// Resize first -- due to the window size limits this is not unlikely
// to turn out differently from what we request.
BPoint oldRightBottom = fWindow->Frame().RightBottom();
fDesktop->ResizeWindowBy(fWindow, delta.x * fHorizontal,
delta.y * fVertical);
// constrain delta to true change in size
delta = fWindow->Frame().RightBottom() - oldRightBottom;
delta.x *= fHorizontal;
delta.y *= fVertical;
// see, if we have to move, too
float moveX = fHorizontal == LEFT ? delta.x : 0;
float moveY = fVertical == TOP ? delta.y : 0;
if (moveX != 0 || moveY != 0)
fDesktop->MoveWindowBy(fWindow, moveX, moveY);
}
virtual void MouseUpWindowAction()
{
fDesktop->SendWindowBehind(fWindow);
}
private:
int8 fHorizontal;
int8 fVertical;
};
// #pragma mark - DecoratorButtonState
struct DefaultWindowBehaviour::DecoratorButtonState : State {
DecoratorButtonState(DefaultWindowBehaviour& behavior,
int32 tab, Decorator::Region button)
:
State(behavior),
fTab(tab),
fButton(button)
{
}
virtual void EnterState(State* previousState)
{
_RedrawDecorator(NULL);
}
virtual void MouseUp(BMessage* message, BPoint where)
{
// ignore, if it's not the primary mouse button
int32 buttons = message->FindInt32("buttons");
if ((buttons & B_PRIMARY_MOUSE_BUTTON) != 0)
return;
// redraw the decorator
if (Decorator* decorator = fWindow->Decorator()) {
BRegion* visibleBorder = fWindow->RegionPool()->GetRegion();
fWindow->GetBorderRegion(visibleBorder);
visibleBorder->IntersectWith(&fWindow->VisibleRegion());
DrawingEngine* engine = decorator->GetDrawingEngine();
engine->LockParallelAccess();
engine->ConstrainClippingRegion(visibleBorder);
int32 tab;
switch (fButton) {
case Decorator::REGION_CLOSE_BUTTON:
decorator->SetClose(fTab, false);
if (fBehavior._RegionFor(message, tab) == fButton)
fWindow->ServerWindow()->NotifyQuitRequested();
break;
case Decorator::REGION_ZOOM_BUTTON:
decorator->SetZoom(fTab, false);
if (fBehavior._RegionFor(message, tab) == fButton)
fWindow->ServerWindow()->NotifyZoom();
break;
case Decorator::REGION_MINIMIZE_BUTTON:
decorator->SetMinimize(fTab, false);
if (fBehavior._RegionFor(message, tab) == fButton)
fWindow->ServerWindow()->NotifyMinimize(true);
break;
default:
break;
}
engine->UnlockParallelAccess();
fWindow->RegionPool()->Recycle(visibleBorder);
}
fBehavior._NextState(NULL);
}
virtual void MouseMoved(BMessage* message, BPoint where, bool isFake)
{
_RedrawDecorator(message);
}
private:
void _RedrawDecorator(const BMessage* message)
{
if (Decorator* decorator = fWindow->Decorator()) {
BRegion* visibleBorder = fWindow->RegionPool()->GetRegion();
fWindow->GetBorderRegion(visibleBorder);
visibleBorder->IntersectWith(&fWindow->VisibleRegion());
DrawingEngine* engine = decorator->GetDrawingEngine();
engine->LockParallelAccess();
engine->ConstrainClippingRegion(visibleBorder);
int32 tab;
Decorator::Region hitRegion = message != NULL
? fBehavior._RegionFor(message, tab) : fButton;
switch (fButton) {
case Decorator::REGION_CLOSE_BUTTON:
decorator->SetClose(fTab, hitRegion == fButton);
break;
case Decorator::REGION_ZOOM_BUTTON:
decorator->SetZoom(fTab, hitRegion == fButton);
break;
case Decorator::REGION_MINIMIZE_BUTTON:
decorator->SetMinimize(fTab, hitRegion == fButton);
break;
default:
break;
}
engine->UnlockParallelAccess();
fWindow->RegionPool()->Recycle(visibleBorder);
}
}
protected:
int32 fTab;
Decorator::Region fButton;
};
// #pragma mark - ManageWindowState
DefaultWindowBehaviour::ManageWindowState::ManageWindowState(
DefaultWindowBehaviour& behavior, BPoint where)
:
State(behavior),
fLastMousePosition(where),
fHorizontal(NONE),
fVertical(NONE)
{
}
DefaultWindowBehaviour::ManageWindowState::ManageWindowState(
DefaultWindowBehaviour& behavior, BPoint where, int8 horizontal,
int8 vertical)
:
State(behavior),
fLastMousePosition(where),
fHorizontal(horizontal),
fVertical(vertical)
{
}
void
DefaultWindowBehaviour::ManageWindowState::EnterState(State* previousState)
{
// Update the mouse cursor
if ((fWindow->Flags() & kAcceptKeyboardFocusFlag) != 0)
fBehavior._ResetCursor();
else if ((fWindow->Flags() & B_NOT_MOVABLE) != 0)
fBehavior._SetNotAllowedCursor();
else
fBehavior._SetMoveCursor();
_UpdateResizeArrows(fLastMousePosition);
}
void
DefaultWindowBehaviour::ManageWindowState::ExitState(State* nextState)
{
}
bool
DefaultWindowBehaviour::ManageWindowState::MouseDown(BMessage* message,
BPoint where, bool& _unhandled)
{
int32 buttons = message->FindInt32("buttons");
if ((buttons & B_PRIMARY_MOUSE_BUTTON) != 0) {
if ((fWindow->Flags() & B_NOT_MOVABLE) == 0) {
fBehavior._SetMoveCursor();
fBehavior._NextState(new (std::nothrow) DragState(fBehavior,
where, false, false));
}
} else if ((buttons & B_SECONDARY_MOUSE_BUTTON) != 0) {
if ((fWindow->Flags() & kAcceptKeyboardFocusFlag) != 0)
fBehavior._ResetCursor();
else if ((fWindow->Flags() & B_NOT_RESIZABLE) == 0) {
fBehavior._NextState(new (std::nothrow) ResizeBorderState(
fBehavior, where, fHorizontal, fVertical));
} else
fBehavior._SetNotAllowedCursor();
}
return true;
}
void
DefaultWindowBehaviour::ManageWindowState::MouseMoved(BMessage* message,
BPoint where, bool isFake)
{
// Update the mouse cursor
if ((fWindow->Flags() & kAcceptKeyboardFocusFlag) != 0)
fBehavior._ResetCursor();
else if ((fDesktop->WindowAt(where)->Flags() & B_NOT_MOVABLE) != 0
|| ((fDesktop->WindowAt(where)->Flags() & B_NOT_RESIZABLE) != 0
&& (message->FindInt32("buttons") & B_SECONDARY_MOUSE_BUTTON) != 0)) {
fBehavior._SetNotAllowedCursor();
} else
fBehavior._SetMoveCursor();
// If the cursor is still over our window, update the borders.
// Otherwise leave the state.
if (fDesktop->WindowAt(where) == fWindow) {
fLastMousePosition = where;
_UpdateResizeArrows(fLastMousePosition);
} else
fBehavior._NextState(NULL);
}
void
DefaultWindowBehaviour::ManageWindowState::ModifiersChanged(BPoint where,
int32 modifiers)
{
fBehavior.fLastModifiers = modifiers;
if ((fWindow->Flags() & B_NOT_RESIZABLE) == 0
&& fBehavior._IsControlModifier(modifiers)) {
fBehavior._SetBorderResizeCursor(where);
} else
fBehavior._ResetCursor();
fBehavior._NextState(NULL);
}
void
DefaultWindowBehaviour::ManageWindowState::_UpdateResizeArrows(BPoint where)
{
if ((fWindow->Flags() & B_NOT_RESIZABLE) != 0)
return;
// Compute the window center relative location of where. We divide by
// the width respective the height, so we compensate for the window's
// aspect ratio.
BRect frame(fWindow->Frame());
if (frame.Width() + 1 == 0 || frame.Height() + 1 == 0)
return;
float x = (where.x - (frame.left + frame.right) / 2)
/ (frame.Width() + 1);
float y = (where.y - (frame.top + frame.bottom) / 2)
/ (frame.Height() + 1);
// compute the resize direction
_ComputeResizeDirection(x, y, fHorizontal, fVertical);
// set resize direction to NONE if not resizable
if ((fWindow->Flags() & B_NOT_H_RESIZABLE) != 0)
fHorizontal = NONE;
if ((fWindow->Flags() & B_NOT_V_RESIZABLE) != 0)
fVertical = NONE;
}
// #pragma mark - DefaultWindowBehaviour
DefaultWindowBehaviour::DefaultWindowBehaviour(Window* window)
:
fWindow(window),
fDesktop(window->Desktop()),
fState(NULL),
fLastModifiers(0)
{
}
DefaultWindowBehaviour::~DefaultWindowBehaviour()
{
delete fState;
}
bool
DefaultWindowBehaviour::MouseDown(BMessage* message, BPoint where,
int32 lastHitRegion, int32& clickCount, int32& _hitRegion)
{
fLastModifiers = message->FindInt32("modifiers");
int32 buttons = message->FindInt32("buttons");
// if a state is active, let it do the job
if (fState != NULL) {
bool unhandled = false;
bool result = fState->MouseDown(message, where, unhandled);
if (!unhandled)
return result;
}
// No state active yet, or it wants us to handle the event -- determine the
// click region and decide what to do.
Decorator* decorator = fWindow->Decorator();
Decorator::Region hitRegion = Decorator::REGION_NONE;
int32 tab = -1;
Action action = ACTION_NONE;
bool inBorderRegion = false;
if (decorator != NULL)
inBorderRegion = decorator->GetFootprint().Contains(where);
bool windowModifier = _IsWindowModifier(fLastModifiers);
if (windowModifier || inBorderRegion) {
// click on the window decorator or we have the window modifier keys
// held
// get the functional hit region
if (windowModifier) {
// click with window modifier keys -- let the whole window behave
// like the border
hitRegion = Decorator::REGION_LEFT_BORDER;
} else {
// click on the decorator -- get the exact region
hitRegion = _RegionFor(message, tab);
}
// translate the region into an action
uint32 flags = fWindow->Flags();
if ((buttons & B_SECONDARY_MOUSE_BUTTON) != 0
|| (_IsControlModifier(fLastModifiers)
&& (buttons & B_PRIMARY_MOUSE_BUTTON) != 0)) {
// right mouse button or control + left mouse button
switch (hitRegion) {
case Decorator::REGION_TAB:
case Decorator::REGION_CLOSE_BUTTON:
case Decorator::REGION_ZOOM_BUTTON:
case Decorator::REGION_MINIMIZE_BUTTON:
// Right clicking on the window tab sends it behind
fDesktop->SendWindowBehind(fWindow);
break;
case Decorator::REGION_LEFT_BORDER:
case Decorator::REGION_RIGHT_BORDER:
case Decorator::REGION_TOP_BORDER:
case Decorator::REGION_BOTTOM_BORDER:
case Decorator::REGION_LEFT_TOP_CORNER:
case Decorator::REGION_LEFT_BOTTOM_CORNER:
case Decorator::REGION_RIGHT_TOP_CORNER:
case Decorator::REGION_RIGHT_BOTTOM_CORNER:
action = (flags & B_NOT_RESIZABLE) == 0
? ACTION_RESIZE_BORDER : ACTION_DRAG;
break;
default:
break;
}
} else if ((buttons & B_PRIMARY_MOUSE_BUTTON) != 0) {
// left mouse button
switch (hitRegion) {
case Decorator::REGION_TAB: {
// tab sliding in any case if either shift key is held down
// except sliding up-down by moving mouse left-right would
// look strange
if ((fLastModifiers & B_SHIFT_KEY) != 0
&& fWindow->Look() != kLeftTitledWindowLook) {
action = ACTION_SLIDE_TAB;
break;
}
action = ACTION_DRAG;
break;
}
case Decorator::REGION_LEFT_BORDER:
case Decorator::REGION_RIGHT_BORDER:
case Decorator::REGION_TOP_BORDER:
case Decorator::REGION_BOTTOM_BORDER:
action = ACTION_DRAG;
break;
case Decorator::REGION_CLOSE_BUTTON:
action = (flags & B_NOT_CLOSABLE) == 0
? ACTION_CLOSE : ACTION_DRAG;
break;
case Decorator::REGION_ZOOM_BUTTON:
action = (flags & B_NOT_ZOOMABLE) == 0
? ACTION_ZOOM : ACTION_DRAG;
break;
case Decorator::REGION_MINIMIZE_BUTTON:
action = (flags & B_NOT_MINIMIZABLE) == 0
? ACTION_MINIMIZE : ACTION_DRAG;
break;
case Decorator::REGION_LEFT_TOP_CORNER:
case Decorator::REGION_LEFT_BOTTOM_CORNER:
case Decorator::REGION_RIGHT_TOP_CORNER:
// TODO: Handle correctly!
action = ACTION_DRAG;
break;
case Decorator::REGION_RIGHT_BOTTOM_CORNER:
action = (flags & B_NOT_RESIZABLE) == 0
? ACTION_RESIZE : ACTION_DRAG;
break;
default:
break;
}
}
}
_hitRegion = (int32)hitRegion;
if (action == ACTION_NONE) {
// No action -- if this is a click inside the window's contents,
// let it be forwarded to the window.
return inBorderRegion;
}
// reset the click count, if the hit region differs from the previous one
if (hitRegion != lastHitRegion)
clickCount = 1;
DesktopSettings desktopSettings(fDesktop);
if (!desktopSettings.AcceptFirstClick()) {
// Ignore clicks on decorator buttons if the
// non-floating window doesn't have focus
if (!fWindow->IsFocus() && !fWindow->IsFloating()
&& action != ACTION_RESIZE_BORDER
&& action != ACTION_RESIZE && action != ACTION_SLIDE_TAB)
action = ACTION_DRAG;
}
bool activateOnMouseUp = false;
if (action != ACTION_RESIZE_BORDER) {
// activate window if in click to activate mode, else only focus it
if (desktopSettings.MouseMode() == B_NORMAL_MOUSE) {
fDesktop->ActivateWindow(fWindow);
} else {
fDesktop->SetFocusWindow(fWindow);
activateOnMouseUp = true;
}
}
// switch to the new state
switch (action) {
case ACTION_CLOSE:
case ACTION_ZOOM:
case ACTION_MINIMIZE:
_NextState(